Abstract
From the gyrokinetic equations, a quasilinear equation can be derived with RF effects included in the quasilinear operator. From this, generalized moment equations can be deduced in the guiding center approximation. Of particular interest is the parallel momentum equation which drives the neoclassical transport. The parallel RF forces which can be due to nonresonant or resonant ponderomotive forces are quite different between electrons and ions so that an electrostatic electric field is established. This electric field can influence transport near the plasma edge. We estimate the neoclassical particle and energy fluxes in the Pfirsch-Schlüter regime appropriate for the edge region. Since RF can generate asymmetric momentum and heat sources, it changes the transport in RF heated plasmas and also offers the possibility of externally controlling the density and confinement properties of a tokamak plasma. These effects are discussed in terms of antenna near fields and power requirements. Effects on limiter and divertor discharges will be discussed.
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